102135746 has 4 divisors (see below), whose sum is σ = 153203622. Its totient is φ = 51067872.

The previous prime is 102135713. The next prime is 102135749. The reversal of 102135746 is 647531201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 101223721 + 912025 = 10061^2 + 955^2 .

It is a super-2 number, since 2×102135746² = 20863421221953032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102135749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25533935 + ... + 25533938.

Almost surely, 2^102135746 is an apocalyptic number.

102135746 is a deficient number, since it is larger than the sum of its proper divisors (51067876).

102135746 is an equidigital number, since it uses as much as digits as its factorization.

102135746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51067875.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 102135746 is about 10106.2231323081. The cubic root of 102135746 is about 467.4400521757.

Adding to 102135746 its reverse (647531201), we get a palindrome (749666947).

The spelling of 102135746 in words is "one hundred two million, one hundred thirty-five thousand, seven hundred forty-six".